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1) Use D18F1xF4 VGA Enable to simplify legacy video I/O support. 

2) Extend PCI MMIO limit from dfffffff to fecfffff.
3) Add AMD recommended non-posted mapping for SB800 legacy devices.

Signed-off-by: Scott Duplichan <scott@notabs.org>
Acked-by: Marc Jones <marcj303@gmail.com>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6573 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Scott Duplichan 2011-05-15 21:10:20 +00:00 committed by Marc Jones
parent 6f7375c24c
commit b0b4063d6a
1 changed files with 19 additions and 18 deletions
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37
src/mainboard/amd/persimmon/agesawrapper.c
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@ -85,38 +85,39 @@ agesawrapper_amdinitcpuio (
PCI_ADDR PciAddress;
AMD_CONFIG_PARAMS StdHeader;
/* Enable MMIO on AMD CPU Address Map Controller */
/* Start to set MMIO 0000A0000-0000BFFFF to Node0 Link0 */
/* Enable legacy video routing: D18F1xF4 VGA Enable */
PciAddress.AddressValue = MAKE_SBDFO (0, 0, 0x18, 1, 0xF4);
PciData = 1;
LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
/* The platform BIOS needs to ensure the memory ranges of SB800 legacy
* devices (TPM, HPET, BIOS RAM, Watchdog Timer, I/O APIC and ACPI) are
* set to non-posted regions.
*/
PciAddress.AddressValue = MAKE_SBDFO (0, 0, 0x18, 1, 0x84);
PciData = 0x00000B00;
PciData = 0x00FEDF00; // last address before processor local APIC at FEE00000
PciData |= 1 << 7; // set NP (non-posted) bit
LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
PciAddress.AddressValue = MAKE_SBDFO (0, 0, 0x18, 1, 0x80);
PciData = 0x00000A03;
LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
/* Set TOM-DFFFFFFF to Node0 Link0. */
PciData = (0xFED00000 >> 8) | 3; // lowest NP address is HPET at FED00000
LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
/* Map the remaining PCI hole as posted MMIO */
PciAddress.AddressValue = MAKE_SBDFO (0, 0, 0x18, 1, 0x8C);
PciData = 0x00DFFF00;
PciData = 0x00FECF00; // last address before non-posted range
LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
LibAmdMsrRead (0xC001001A, &MsrReg, &StdHeader);
MsrReg = (MsrReg >> 8) | 3;
PciAddress.AddressValue = MAKE_SBDFO (0, 0, 0x18, 1, 0x88);
PciData = (UINT32)MsrReg;
LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
/* Set E0000000-FFFFFFFF to Node0 Link0 with NP set. */
PciAddress.AddressValue = MAKE_SBDFO (0, 0, 0x18, 1, 0xBC);
PciData = 0x00FFFF00 | 0x80;
LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
PciAddress.AddressValue = MAKE_SBDFO (0, 0, 0x18, 1, 0xB8);
PciData = (PCIE_BASE_ADDRESS >> 8) | 03;
LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
/* Start to set PCIIO 0000-FFFF to Node0 Link0 with ISA&VGA set. */
/* Send all IO (0000-FFFF) to southbridge. */
PciAddress.AddressValue = MAKE_SBDFO (0, 0, 0x18, 1, 0xC4);
PciData = 0x0000F000;
LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
PciAddress.AddressValue = MAKE_SBDFO (0, 0, 0x18, 1, 0xC0);
PciData = 0x00000013;
PciData = 0x00000003;
LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
Status = AGESA_SUCCESS;
return (UINT32)Status;